NRC file photo of Prairie IslandXcel Energy's Prairie Island nuclear power plant has made what appears to be two admissions of separate toxic chemical and radiological spills in less than a week. Residents, and the tribal day care center, of the Prairie Island Indian Community are located within hundreds of yards of the nuclear power plant. Read more...

"But Kevin Kamps, a radioactive-waste specialist at Beyond Nuclear, a Maryland-based watchdog group that focuses on the nuclear power industry, said it was irresponsible to claim that there was no danger.

'We do take exception to that flippant disregard they have. Tritium is a clinically proven cause of cancer, birth defects, and genetic mutations,' Kamps said. 'It's long known that any exposure carries a health risk.'

...But just because the level is below the EPA's limit does not mean there's no risk, Kamps said.

'It's long known that any exposure to radioactivity, no matter how small, still carries a risk of cancer," he said. "And those risks accumulate over a lifetime."

The articles reports that Xcel Energy did not notify the Prairie Island Indian Community, located 600 yards from the nuclear power plant, about last November's spill until last week, and waited till Monday to notify them about last Friday's spill, as it had occurred "after business hours" just before a weekend.